Cherne 269921 Plug 3-Inch Kwik 'N Sure Works in all types of pipe. Wing nut on 3/8""  1-1/4"" sizes. Hex nut on 1.5"" through 5"" sizes. Works well for plugging water line stub-outs. Natural rubber O-ring. Works in all types of pipe. Wing nut on 3/8" - 1-1/4" sizes. Hex nut on 1.5" through 5" sizes. Works well for plugging water line stub-outs. Size 3 in Works in all types of pipe Ideal for plugging water line stub-outs Designed for high pressure applications Natural rubber o-ring Wing nut on the .39&#034;-1.25&#034; sizes Hex nut on the 1.5&#034;-5&#034; sizes